<form method='post' enctype="multipart/form-data">
{#    <input type="text" name="key" placeholder='key'>#}
    <input type="text" name="appid" placeholder='appid'><br>
    是否开启<select name="select">
      <option value ="true">是</option>
      <option value ="false">否</option>
    </select><br>
     选择图片<input type="file" size="30" name="photo"/><br>
    <input type="submit">
</form>